149406987 has 4 divisors (see below), whose sum is σ = 199209320. Its totient is φ = 99604656.

The previous prime is 149406923. The next prime is 149407001. The reversal of 149406987 is 789604941.

149406987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 149406987 - 2⁶ = 149406923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149406487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24901162 + ... + 24901167.

It is an arithmetic number, because the mean of its divisors is an integer number (49802330).

Almost surely, 2^149406987 is an apocalyptic number.

149406987 is a deficient number, since it is larger than the sum of its proper divisors (49802333).

149406987 is an equidigital number, since it uses as much as digits as its factorization.

149406987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49802332.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 149406987 is about 12223.2150844203. The cubic root of 149406987 is about 530.6281705718.

The spelling of 149406987 in words is "one hundred forty-nine million, four hundred six thousand, nine hundred eighty-seven".